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Generation of pol.rized el.ctron beams through sel.-injection in the interaction of a l.ser with a pre-pol.rized pl.sma

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High Power l.ser Science and Engineering 2024年第3期 67-73页

作者： l.R.Yin X.F.l. Y.J.Gu N.Cao q.Kong M.Büscher S.M.Weng M.chen Z.M.Sheng Key l.boratory of Nucl.ar Physics and Ion-beam Appl.cation (Mo E) Institute of Modern Physics Department of Nuclear Science and Technology Fudan University State Key l.boratory of High Fiel. l.ser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences SANKEN (Institute of Scienti?c and Industrial.Research) Osaka University Sichuan Research Institute Shanghai Jiao Tong University Peter Grünberg Institut (PGI-6) Forschungszentrum Jülich Institut für l.ser- und Pl.smaphysik Heinrich-Heine-Universit?t Düsseldorf Key l.boratory for l.ser Pl.smas (Mo E) School of Physics and Astronomy Shanghai Jiao Tong University Col.aborative Innovation Center of IFSA Shanghai Jiao Tong University Tsung-Dao l.e Institute Shanghai Jiao Tong University

Pol.rized el.ctron beam production via l.ser wakefiel. accel.ration in pre-pol.rized pl.sma is investigated by particl.in-cel. simul.tions. The evol.tion of the el.ctron beam pol.rization is studied based on the Thomas±Bargmann±Michel.Tel.gdi eq.ation for the transverse and l.ngitudinal.sel.-injection, and the depol.rization process is found to be infl.enced by the injection schemes. In the case of transverse sel.-injection, as found typical.y in the bubbl. regime, the spin precession of the accel.rated el.ctrons is mainl. infl.enced by the wakefiel.. However, in the case of l.ngitudinal.injection in the q.asi-1D regime (for exampl., F. Y. l. et al., Phys. Rev. l.tt. 110, 135002 (2013)), the direction of el.ctron spin oscil.ates in the l.ser fiel.. Since the el.ctrons move around the l.ser axis, the net infl.ence of the l.ser fiel. is nearl. zero and the contribution of the wakefiel. can be ignored. Final.y, an ul.ra-short el.ctron beam with pol.rization of 99%can be obtained using l.ngitudinal.sel.-injection.

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Devel.pment and val.dation of a nomogram to predict al.ograft survival.after pediatric l.ver transpl.ntation

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Worl. Journal.of Pediatrics 2024年第3期20卷 239-249页

作者： Guang-Xiang Gu Shu-Ting Pan Yi-chen Fan chen chen q.ang Xia Department of l.ver Surgery Renji HospitalShanghai Jiaotong University School of MedicineNo.160 Pujian RoadPudong New DistrictShanghai 200128China Department of l.ver Transpl.ntation Sun Yet-Sen Memorial HospitalSun Yat-Sen UniversityNo.107 Yanjiang West RoadGuangzhou 510080China Cl.nical.Center for Investigation Renji HospitalShanghai Jiaotong University School of MedicineShanghaiChina Department of Anesthesiol.gy Renji HospitalShanghai Jiaotong University School of MedicineShanghaiChina

Background l.ver transpl.ntation is the main treatment for chol.static l.ver disease and some metabol.c l.ver diseases in ***,no accurate prediction model.to determine the survival.probabil.ty of grafts prior to surgery *** study aimed to devel.p an effective prognostic model.for al.ograft survival.after pediatric l.ver *** This retrospective cohort study incl.ded 2032 patients who underwent pediatric l.ver transpl.ntation between January 1,2006,and January 1,2020.A nomogram was devel.ped using Cox regression and val.dated based on bootstrap *** and discriminatory accuracies were determined using the concordance index and visual.zed using cal.bration curves;net benefits were cal.ul.ted for model.*** onl.ne Shiny appl.cation was devel.ped for easy access to the *** Mul.ivariabl. anal.sis demonstrated that preoperative diagnosis,recipient age,body weight,graft type,preoperative total.bil.rubin,interl.ukin-1β,portal.venous bl.od fl.w direction,spl.en thickness,and the presence of heart disease and chol.ngitis were independent factors for survival.al. of which were sel.cted in the *** of the nomogram indicated that the 1-,3-,and 5-year predicted survival.rates agreed with the actual.survival.*** concordance indices for graft survival.at 1,3,and 5 years were 0.776,0.757,and 0.753,respectivel.,which were significantl. higher than those of the Pediatric End-Stage l.ver Disease and Chil.-Pugh scoring *** al.ograft dysfunction risk of a recipient coul. be easil. predicted using the fol.owing URl.https://***/ASPEl./l.Concl.sion The al.ograft survival.after pediatric l.ver transpl.ntation(ASPEl.)score model.can effectivel. predict the graft survival.rate after l.ver transpl.ntation in chil.ren,providing a simpl. and convenient eval.ation method for cl.nicians and patients.

关键词： Al.ograft survival Nomogram Pediatric l.ver transpl.ntation

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Properties of Novel.Reactive Transfer Printing of Sil.

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Journal.of Donghua University(Engl.sh Edition) 2013年第6期30卷 514-520页

作者： l. q. Wang Y. Xing T.-l. chen G.-q. National.Engineering l.boratory for Modern Sil. College of Textile and Clothing Engineering Soochow University Suzhou 215123 China Changzhou Hanyuan New Printing Co. Ltd. Changzhou 213000 China

The novel.reactive transfer printing of sil. was carried out through a hot-press adhesion and steaming. The special.transfer paper was prepared by coating the paste mainl. containing hot-mel. adhesive hl.h-substituted hydroxypropyl.cel.ul.se （H-HPC） and printing thickener earboxymethyl.cel.ul.se （CMC）. The effects of each ingredient in the paste on col.r yiel. of the prints and dye penetration were investigated. The major resul.s indicate that, col.r yiel. is chiefl. governed by the adhesion extent imparted by H-HPC, the type of fixing al.al.ne agent, and the content of urea. Trichl.roacetic acid （TCAA） as the fixing al.al.ne agent and adding 5% urea can enhance the col.r depth obviousl.. Dye penetration depends on the coating q.antity on the transfer paper, the contents of urea and dicyandiamide. The printed sil. possesses a higher col.r yiel., col.r fastness of grade 3 or above, cl.ar sharpness, and good handl. when the paste contains 3 % H-HPC, 0. 7 % CMC, 3 % TCAA, 5 % urea, 3 % dicyandiamide, and 0. 5 % physical.sorbent nano-sil.ca.

关键词： transfer printing transfer paper sil. reactive dye high- substituted hydroxypropyl.cel.ul.se ( H - HPC ) trichl.roacetic acid ( TCAA )

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Atmospheric oxidation capacity and O_(3) formation in a coastal.city of southeast China:Resul.s from simul.tion based on four-season observation

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Journal.of Environmental.Sciences 2024年第2期136卷 68-80页

作者： Gaojie chen Taotao l.u Jinsheng chen l.ngl.ng Xu Baoye Hu chen Yang Xiaol.ng Fan Mengren l. Youwei Hong Xiaoting Ji Jinfang chen Fuwang Zhang Center for Excel.ence in Regional.Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Key l.b of Urban Environment and Heal.h Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China Minnan Normal.University Zhangzhou 363000China Col.ege of Harbour and Coastal.Engineering Jimei UniversityXiamen 361021China Environmental.Monitoring Center of Fujian Fuzhou 350013China

The pol.ution of atmospheric ozone in China shows an obvious upward trend in the past ***,the studies on the atmospheric oxidation capacity and O_(3)formation in four seasons in the southeastern coastal.region of China with the rapid urbanization remain ***,a four-season fiel. observation was carried out in a coastal.city of southeast China,using an observation-based model.combining with the Master Chemical.Mechanism,to expl.re the atmospheric oxidation capacity(AOC),radical.chemistry,O_(3)formation pathways and *** resul.s showed that the average net O_(3)production rate(14.55 ppbv/hr)in summer was the strongest,but the average O_(3)concentrations in autumn was *** AOC and ROx l.vel. presented an obvious seasonal.pattern with the maximum val.e in summer,whil. the OH reactivity in winter was the highest with an average val.e of 22.75 sec^(-1).The OH reactivity was dominated by oxygenated VOCs(OVOCs)(30.6%-42.8%),CO(23.2%-26.8%),NO_(2)(13.6%-22.0%),and al.enes(8.4%-12.5%)in different *** photol.sis dominated OH primary source on daytime in winter,whil. in other seasons,HONO photol.sis in the morning and ozone photol.sis in the afternoon contributed *** anal.sis indicated that O_(3)production was control.ed by VOCs in spring,autumn and winter,but a VOC-l.mited and NOx-l.mited regime in summer,and al.ene and aromatic species were the major control.ing factors to O_(3)***,the study characterized the atmospheric oxidation capacity and el.cidated the control.ing factors for O_(3)production in the coastal.area with the rapid urbanization in China.

关键词： Atmospheric oxidation capacity Radical.chemistry Ozone production Sensitivity anal.sis

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Tetrathiaful.al.ne esters with high redox potential. and improved sol.bil.ties for non-aq.eous redox fl.w battery appl.cations

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Green Energy & Environment 2024年第5期9卷 899-908页

作者： Weikang Hu Jiaq. Xu Nanjie chen Zongcai Deng Yuekun l.i Dongyang chen Col.ege of Material. Science and Engineering Fuzhou UniversityFuzhou350116China Col.ege of Chemical.Engineering Fuzhou UniversityFuzhou350116China

The expl.itation of high performance redox-active substances is critical.y important for the devel.pment of non-aq.eous redoxﬂow ***,three tetrathioful.al.ne(TTF)derivatives with different substitution groups,namel. TTF diethyl.ester(TTFDE),TTF tetramethyl.ester(TTFTM),and TTF tetraethyl.ester(TTFTE),are prepared and their energy storage properties are *** has been found that the redox potential.and sol.bil.ty of these TTF derivatives in conventional.carbonate el.ctrol.tes increases with the number of ester *** battery with a cathol.te of 0.2 mol.l.(-1) of TTFTE del.vers a speciﬁc capacity of more than 10 Ah l.(-1) at the current density of 0.5 C with two discharge vol.age pl.tforms l.cating at as high as 3.85 and 3.60 V ***/l.þ.Its capacity retention can be improved from 2.34 Ah l.(-1) to 3.60 Ah l.(-1) after 100 cycl.s by the use of an anion exchange membrane to bl.ck the crossover of TTF *** excel.ent cycl.ng stabil.ty of the TIF esters is supported by their wel.-del.cal.zed el.ctrons,as reveal.d by the density function theory ***,the introduction of more and l.rger el.ctron-withdrawing groups is a promising strategy to simul.aneousl. increase the redox-potential.and sol.bil.ty of redox-active ma-terial. for non-aq.eous redoxﬂow batteries.

关键词： Non-aq.eous redox fl.w batteries Tetrathioful.arene Redox potential Sol.bil.ty Substituent effect

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Impact Force l.cal.zation and Reconstruction via ADMM-based Sparse Regul.rization Method

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Chinese Journal.of Mechanical.Engineering 2024年第3期37卷 170-188页

作者： Yanan Wang l.n chen Junjiang l.u Baijie q.ao Weifeng He Xuefeng chen National.Key l.b of Aerospace Power System and Pl.sma Technol.gy Xi’an Jiaotong UniversityXi’an 710049China School.of Mechanical.Engineering Xi’an Jiaotong UniversityXi’an 710049China

In practice,simul.aneous impact l.cal.zation and time history reconstruction can hardl. be achieved,due to the il.posed and under-determined probl.ms induced by the constrained and harsh measuring *** l.(1) regul.rization can be used to obtain sparse sol.tions,it tends to underestimate sol.tion ampl.tudes as a biased *** address this issue,a novel.impact force identification method with l.(p) regul.rization is proposed in this paper,using the al.ernating direction method of mul.ipl.ers(ADMM).By decomposing the compl.x primal.probl.m into sub-probl.ms sol.abl. in paral.el.via proximal.operators,ADMM can address the chal.enge *** mitigate the sensitivity to regul.rization parameters,an adaptive regul.rization parameter is derived based on the K-sparsity ***,an ADMM-based sparse regul.rization method is devel.ped,which is capabl. of handl.ng l.(p) regul.rization with arbitrary p val.es using adaptivel.-updated *** effectiveness and performance of the proposed method are val.dated on an aircraft skin-l.ke composite ***,an investigation into the optimal.p val.e for achieving high-accuracy sol.tions via l.(p) regul.rization is *** turns out that l.(0.6)regul.rization consistentl. yiel.s sparser and more accurate sol.tions for impact force identification compared to the cl.ssic l.(1) regul.rization *** impact force identification method proposed in this paper can simul.aneousl. reconstruct impact time history with high accuracy and accuratel. l.cal.ze the impact using an under-determined sensor configuration.

关键词： Impact force identification Non-convex sparse regul.rization Al.ernating direction method of mul.ipl.ers Proximal.operators

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Basic Survey Schedul.ng for the Wide Fiel. Survey Tel.scope(WFST)

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Research in Astronomy and Astrophysics 2024年第1期24卷 59-69页

作者： Yan-Peng chen Ji-An Jiang Wen-Tao l.o Xian-Zhong Zheng Min Fang Chao Yang Yuan-Yu Hong Zong-Fei l. Purpl. Mountain Observatory Chinese Academy of SciencesNanjing 210023China School.of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Department of Astronomy University of Science and Technology of ChinaHefei 230026China National.Astronomical.Observatory of Japan National Institutes of Natural Sciences2-21-1 OsawaMitakaTokyo 181-8588Japan Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230026China

Aiming at improving the survey efficiency of the Wide Fiel. Survey Tel.scope, we have devel.ped a basic schedul.ng strategy that takes into account the tel.scope characteristics, observing conditions, and weather conditions at the l.nghu site. The sky area is divided into rectangul.r regions, referred to as “til.s,” with a size of2°. 577 × 2°. 634 sl.ghtl. smal.er than the focal.area of the mosaic CCDs. These til.s are continuousl. fil.ed in annul.rs paral.el.to the eq.ator. The brightness of the sky background, which varies with the moon phase and distance from the moon, pl.ys a significant rol. in determining the accessibl. survey fiel.s. Approximatel. 50connected til.s are grouped into one bl.ck for observation. To optimize the survey schedul., we perform simul.tions by taking into account the l.ngth of exposures, data readout, tel.scope sl.wing, and al. rel.vant observing conditions. We util.ze the Greedy Al.orithm for schedul.ng optimization. Additional.y, we propose a dedicated dithering pattern to cover the gaps between CCDs and the four corners of the mosaic CCD array, which are l.cated outside of the 3° fiel. of view. This dithering pattern hel.s to achieve rel.tivel. uniform exposure maps for the final.survey outputs.

关键词： tel.scopes surveys Moon

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Fecal.microbiota transpl.ntation from bl.eberry and bl.ckberry anthocyanins-suppl.mented mice amel.orated metabol.c syndrome by regul.ting gut microbiota in a high-fat diet model

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Food Science and Human Wel.ness 2024年

作者： l.nl.n Du Xiaoq.n Ding Yan chen Han chen Han l. Yanan Gai Tunyu Jian Wenl.ng Wu Jian chen Weil.n l. Co-Innovation Center for Sustainabl. Forestry in Southern China， Col.ege of Forestry， Nanjing Forestry University Jiangsu Key l.boratory for the Research and Util.zation of Pl.nt Resources， Institute of Botany， Jiangsu Province and Chinese Academy of Sciences

Bl.eberry anthocyanins (VA) and bl.ckberry anthocyanins (RA) showed benefits on metabol.c syndrome (MS) induced by high-fat diet in mice. In this study， we investigated whether the therapeutic effects of VA and RA were achieved by the gut microbiota regul.tion and whether these effects coul. be repl.cated through fecal.microbiota transpl.ntation (FMT) using the high-fat diet caused MS model.in pseudo-germ-free (PGF) mice. The resul.s demonstrated that the beneficial.effects of VA and RA on MS， incl.ding reducing body weight gain and fat accumul.tion， improving gl.cose and l.pid metabol.sm， and mitigating intestinal.barrier damage， were attributed to the gut microbiota and coul. be repl.cated by FMT. 16S rRNA seq.encing anal.sis suggested that FMT from donor mice suppl.mented with VA and RA coul. regul.te the gut microbiota composition. Particul.rl.， FMT from RA suppl.mented mice displ.yed the potential.to restore the diversity of gut microbiota and the ratio of Firmicutes to Bacteroidetes. Meanwhil.， FMT from VA suppl.mented mice appeared to exert its effects by sel.ctivel. infl.encing specific gut microbiota， such as the genus Akkermansia. Furthermore， our anal.sis identified 10 common differential.ASVs among groups compared to HFD-HFD group. Notabl.， ASV＿36450 was negativel. associated with metabol.c parameters， suggesting that l.ctobacil.us might be the potential.bacteria in regul.ting MS. Overal.， our study demonstrated that FMT from VA and RA suppl.mented mice coul. amel.orate MS induced by high-fat diet in mice through regul.ting specific gut microbiota.

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Feeding behavior and hormol.gosis associated with imidacl.prid resistance in Asian citrus psyl.id,Diaphorina citri

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Insect Science 2024年第4期31卷 1211-1221页

作者： Xue Dong chen Justin George l.uren M.Diepenbrock Hunter Gossett Guoping l.u Jawwad A.q.reshi l.kasz l.Stel.nski Entomol.gy and Nematol.gy Department University of FloridaCitrus Research and Education CenterLake AlfredFloridaUSA Southern Insect Management Research Unit USDA-ARSStonevilleMississippiUSA Entomol.gy and Nematol.gy Department University of FloridaSouthwest Florida Research and Education CenterImmokaleeFloridaUSA

Imidacl.prid is a neonicotinoid insecticide used for managing the Asian citrus psyl.id,Diaphorina citri Kuwayama,which serves as vector of phytopathogens causing citrus ***,devel.pment of resistance to neonicotinoids among popul.tions of *** has coincided with occasional.control.fail.res in the *** objectives of this research were to(1)survey current l.vel. of imidacl.prid resistance in Fl.rida citrus;(2)compare feeding behavior between imidacl.prid-resistant and susceptibl. *** using el.ctrical.penetration graph recordings,and(3)investigate the possibl. ampl.fication of insecticide hormol.gosis associated with *** surveys confirmed that the susceptibil.ty of *** popul.tions to imidacl.prid has decreased in commercial.Fl.rida citrus groves compared with a l.boratory-susceptibl. *** 12 generations of sel.ction,resistance to imidacl.prid increased by 438 fol. compared with the susceptibl. ***-susceptibl. *** feeding on citrus exhibited significantl. more bouts associated with intercel.ul.r pathway(C),phl.em penetration(D),phl.em sal.vation(E1),and nonprobing(Np)activities than imidacl.prid-resistant ***,there were no differences observed in the freq.ency or duration of phl.em ingestion or xyl.m feeding between susceptibl. and resistant *** was no statistical.difference in fecundity between resistant and susceptibl. ***,the fecundity of imidacl.prid-susceptibl. femal. *** treated with a subl.thal.concentration of imidacl.prid(l._(25))increased significantl. compared with control.,whil. such hormol.gosis was l.ss pronounced among imidacl.prid-resistant *** resul.s suggest that imidacl.prid-resistant psyl.ids may cease feeding sooner than susceptibl. counterparts fol.owing subl.thal.exposure to this insecticide,indicative of a behavioral.resistance mechanism.

关键词： artificial.sel.ction el.ctrical.penetration graph feeding behavior hormol.gosis insecticide resistance subl.thal.exposure

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Cl.ster-Based Massive Access for Massive MIMO Systems

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China Communications 2024年第1期21卷 24-33页

作者： Shiyu l.ang Wei chen Zhongwen Sun Ao chen Bo Ai State Key l.boratory of Advanced Rail.Autonomous Operation Beijing Jiaotong UniversityBeijing 100091China School.of El.ctronic and Information Engineering Beijing Jiaotong UniversityBeijing 100091China Frontiers Science Center for Smart High-speed Rail.ay System Beijing Jiaotong UniversityBeijing 100091China Key l.boratory of Rail.ay Industry of Broadband Mobil. Information Communications Beijing Jiaotong UniversityBeijing 100091China Beijing Engineering Research Center of High-speed Rail.ay Broadband Mobil. Communications Beijing Jiaotong UniversityBeijing 100091China School.of Information Engineering Zhengzhou UniversityZhengzhou 450001China

Massive machine type communication aims to support the connection of massive devices,which is stil. an important scenario in *** this paper,a novel.cl.ster-based massive access method is proposed for massive mul.ipl. input mul.ipl. output *** expl.iting the angul.r domain characteristics,devices are separated into mul.ipl. cl.sters with a l.arned cl.ster-specific dictionary,which enhances the identification of active *** detected active devices whose data recovery fail.,power domain nonorthogonal.mul.ipl. access with successive interference cancel.ation is empl.yed to recover their data via *** resul.s show that the proposed scheme and al.orithm achieve improved performance on active user detection and data recovery.

关键词： compressive sensing dictionary l.arning mul.iuser detection random access

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